There are plenty of fine defensive line prospects from the Big Ten working out the NFL Scouting Combine on Monday, including Purdue's Ryan Kerrigan and Iowa's Adrian Clayborn.

The one perhaps making the biggest impact, however, is Wisconsin's J.J. Watt. After watching Watt (6-5, 290) run the 40-yard dash in 4.78 seconds, NFL Network draft analyst Mike Mayock called him the "prototype" for a five-technique defensive end.

"I think one of the 3-4 teams will love him in the top half of the first round," Mayock said.

Watt was a versatile pass rusher for the Badgers, working both off the edge and inside and showing great determination in blowing up plays in the backfield. His work ethic and hustle also won't disappoint.

The key numbers to remember are 7, 9 and 11. That's where the 3-4 teams such as San Francisco, Dallas and Houston select in the first round. One of those spots would be the peak of where Watt gets drafted.